Math Problem Statement

he line y=1/4x+2 meets the y axis at the point B. The point C has coordinates (-5,3). Find the gradient of the line joining the points B and C

Solution

The equation of the line is given as y=14x+2y = \frac{1}{4}x + 2. To find the point where this line meets the y-axis, we set x=0x = 0, since any point on the y-axis has x=0x = 0.

So, when x=0x = 0:

y=14(0)+2=2y = \frac{1}{4}(0) + 2 = 2

Thus, the coordinates of point BB are (0,2)(0, 2).

Now, we are asked to find the gradient (slope) of the line joining the points B(0,2)B(0, 2) and C(5,3)C(-5, 3).

The formula for the gradient of a line passing through two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is:

m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Substituting (x1,y1)=(0,2)(x_1, y_1) = (0, 2) and (x2,y2)=(5,3)(x_2, y_2) = (-5, 3):

m=3250=15=15m = \frac{3 - 2}{-5 - 0} = \frac{1}{-5} = -\frac{1}{5}

Thus, the gradient of the line joining points BB and CC is 15-\frac{1}{5}.

Would you like more details, or do you have any questions?

Here are 5 related questions:

  1. How do you find the gradient of a vertical line?
  2. What is the significance of the gradient being negative?
  3. How do you calculate the equation of a line passing through two given points?
  4. What is the slope-intercept form of a line?
  5. Can two non-parallel lines have the same gradient?

Tip: The gradient tells you the steepness of the line and whether it rises or falls as you move from left to right.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Coordinate Geometry
Slopes and Gradients

Formulas

Gradient formula: m = (y2 - y1) / (x2 - x1)

Theorems

Equation of a straight line

Suitable Grade Level

Grades 8-10