Question #a65d7

2 Answers
Jan 18, 2018

y=5x-2y=5x2

Explanation:

We know that the linear equation is in the form of

y=mx+by=mx+b, mm is the slope, ,b# is the y-intercept

Given: m=5m=5, passes through (3,13)(3,13)

:.y=5x+b

We also know that it passes through (3,13), so we can plug that in for x=3, y=13

13=5*3+b

13=15+b

b=-2

:. y = 5x-2

Jan 18, 2018

In point-slope form: y-13=5(x-3)

In y=mx+b form: y=5x-2

Explanation:

We can use the point-slope formula to find the equation of the line

y-y_1=m(x-x_1)

Where m is the slope and (x_1,y_1) is a point on the line

Given: m=5 and (x_1,y_1)->(3,13)

y-13=5(x-3)

This is the equation in point-slope form but this can be rewritten in y=mx+b form

To do that, we'll solve the above equation for y

y-13=5x-15

y-13color(red)(+13)=5x-15color(red)(+13)

y-0=5x-2

y=5x-2

The graph of the line is shown below:

graph{5x-2 [-10, 10, -5, 5]}