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Need help having problems

Need help having problems-example-1
User Cornelius Roemer
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1 Answer

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22 votes
Answer is y= 5x -2

Step by step

In the slope-intercept form you use the slope of the line and the y-intercept to solve using y=mx+b.
m is the slope and b is the y-intercept.

First to find slope using y2 - y1 over x2 - x1
We have points (-3, -17) and (2, 8)

8 - -17 over 2 - -3
25 over 5

Slope (m) is 5

Now the equation
y - y1 = m (x - x1)

We will use points (2, 8) in the equation

y - 8 = 5(x - 2)
y - 8 = 5x -10
Add 8 to both sides to combine constants

y -8 +8 = 5x -10 + 8
Combine

y = 5x -2 This is your answer!

Check your work, chose an x/y pair from the chart and sub in for x and y
(2,8)
8 = 5(2) -2
8 = 10 -2
8 = 8
Solution is equal so equation is correct
Problem solved


User Jochen Ritzel
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2.5k points