Math Problem Statement

Tentukanlah kemiringan/slope garis di bawah ini. (a) y = 2x + 5 (b) y = -3x (c) 3y + 5x -10 = 0 (d) y - 3x + 2 = 0 (e) y = 5 (f) x = 4

Solution

The image contains a problem asking for the slopes of different linear equations. The instructions are in Indonesian: "Tentukanlah kemiringan/slope garis di bawah ini," which translates to "Determine the slope of the lines below."

Here are the equations given:

(a) y=2x+5y = 2x + 5

(b) y=3xy = -3x

(c) 3y+5x10=03y + 5x - 10 = 0

(d) y3x+2=0y - 3x + 2 = 0

(e) y=5y = 5

(f) x=4x = 4

Solutions:

  1. Equation (a): y=2x+5y = 2x + 5

    • This is in slope-intercept form y=mx+by = mx + b, where mm is the slope.
    • Slope =2= 2.
  2. Equation (b): y=3xy = -3x

    • This is also in slope-intercept form y=mxy = mx, with slope mm.
    • Slope =3= -3.
  3. Equation (c): 3y+5x10=03y + 5x - 10 = 0

    • Rewrite in slope-intercept form: 3y=5x+103y = -5x + 10, then y=53x+103y = -\frac{5}{3}x + \frac{10}{3}.
    • Slope =53= -\frac{5}{3}.
  4. Equation (d): y3x+2=0y - 3x + 2 = 0

    • Rewrite: y=3x2y = 3x - 2.
    • Slope =3= 3.
  5. Equation (e): y=5y = 5

    • This is a horizontal line, and the slope of a horizontal line is always 00.
    • Slope =0= 0.
  6. Equation (f): x=4x = 4

    • This is a vertical line, and the slope of a vertical line is undefined (or infinity).
    • Slope =undefined= \text{undefined}.

Let me know if you want further details or explanations!


Here are five related questions to practice:

  1. What is the slope of the line y=4x7y = 4x - 7?
  2. How do you calculate the slope from two given points?
  3. Find the slope of the line passing through the points (2,3)(2, 3) and (4,7)(4, 7).
  4. If the slope of a line is m=12m = \frac{1}{2}, how do you write its equation?
  5. How can you find the equation of a line perpendicular to y=32x+1y = -\frac{3}{2}x + 1?

Tip:

Always remember, for any linear equation of the form Ax+By+C=0Ax + By + C = 0, you can rewrite it in slope-intercept form y=mx+by = mx + b to easily identify the slope mm.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope

Formulas

Slope of a line in the form y = mx + b is m
Rewrite linear equations in slope-intercept form y = mx + b

Theorems

Slope-Intercept Form

Suitable Grade Level

Grades 7-9