Question

I would appreciate a step by step walk-through i will mark as brainliest

Answer 1

Answer:

y = 1.4x - 28/5

Step-by-step explanation:

slope intercept form: y = mx + b

m - slope

b - y-intercept

slope = rise/run

slope = 7/5

y-intercept - point at which the x-coordinate is 0

0 = 7/5 * 4 + b

0 = 28/5 + b

-28/5 = b

plug in

y = 7/5x - 28/5

simplify

y = 1.4x - 28/5

Answer 2

Answer:

• y = 1.4x - 5.6

Step-by-step explanation:

Slope-intercept form:

• y = mx + b

Use two points on the line:

• (4, 0) and (9, 7)

Find the slope:

• m = (7 - 0)/(9 - 4) = 7/5 = 1.4

Find the y-intercept:

• 0 = 4*1/4 + b
• b = - 5.6

The line is:

• y = 1.4x - 5.6