Question

What is an equation in point-slope form of the line that passes through (-7,1) and (-3, 9)

Answer 1

Answer:
y=2x+15

Solution:
Refer to the diagram

Answer 2

Explanation:

let eqn be y - y1 = m(x - x1)

m = (9 - 1)/(-3 - (-7))

m = 2

sub (-7, 1):

y - 1 = 2(x + 7)

therefore, the equation is y - 1 = 2(x + 7)

Topic: coordinate geometry

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