Math Problem Statement

Which ordered pairs represent points on the graph of this equation? Select all that apply. y = 3x + 2.

Solution

To determine which ordered pairs represent points on the graph of the equation y=3x+2y = 3x + 2, let's substitute each xx-value into the equation and check if the resulting yy-value matches the given point.


Step-by-step Check:

  1. For (-5, -3): y=3(5)+2=15+2=13(not 3)y = 3(-5) + 2 = -15 + 2 = -13 \quad (\text{not } -3) Not on the graph.

  2. For (3, 2): y=3(3)+2=9+2=11(not 2)y = 3(3) + 2 = 9 + 2 = 11 \quad (\text{not } 2) Not on the graph.

  3. For (-6, 1): y=3(6)+2=18+2=16(not 1)y = 3(-6) + 2 = -18 + 2 = -16 \quad (\text{not } 1) Not on the graph.

  4. For (1, 5): y=3(1)+2=3+2=5(matches 5)y = 3(1) + 2 = 3 + 2 = 5 \quad (\text{matches } 5) This point is on the graph.

  5. For (-1, -1): y=3(1)+2=3+2=1(matches 1)y = 3(-1) + 2 = -3 + 2 = -1 \quad (\text{matches } -1) This point is on the graph.

  6. For (-2, -4): y=3(2)+2=6+2=4(matches 4)y = 3(-2) + 2 = -6 + 2 = -4 \quad (\text{matches } -4) This point is on the graph.


Correct Points:

The points that are on the graph of y=3x+2y = 3x + 2 are:

  • (1,5)(1, 5)
  • (1,1)(-1, -1)
  • (2,4)(-2, -4)

Conclusion:

You should select:

  • (1,5)(1, 5)
  • (1,1)(-1, -1)
  • (2,4)(-2, -4)

Let me know if you'd like further explanation or help with similar problems!


Related Questions:

  1. How do you graph a linear equation like y=3x+2y = 3x + 2?
  2. What does the slope 33 represent in y=3x+2y = 3x + 2?
  3. How do you find the y-intercept of a linear equation?
  4. How can you determine if a point lies on a line algebraically?
  5. What is the difference between a linear and a quadratic equation?

Tip:

When checking if a point lies on a graph, always substitute the xx-value into the equation and verify the corresponding yy-value.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing Points
Slope-Intercept Form

Formulas

y = mx + b

Theorems

Slope-Intercept Form of a Line

Suitable Grade Level

Grades 6-8