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5x - y = 20

Step-by-step explanation:

The standard form of a line is written in the form: ax + by = c. But, let's first find the slope-intercept form: , where m is the slope and b is the y-intercept

Here, we know that m = 5, so let's put that in: .

However, we don't know b. So, let's use the point given (4, 0), and put in 4 for x and 0 for y to solve for b: ⇒

So, the equation is: . Now, we need to change this to standard form:

Add 20 to both sides and subtract y: 5x - y = 20.

Hope this helps!

5x - y = 20

Step-by-step explanation:

y = mx + c

0 = 5(4) + c

c = -20

y = 5x - 20

5x - y = 20