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HELP AHHHHHHHHHHHHHHHH

HELP AHHHHHHHHHHHHHHHH-example-1
User Daniele Grillo
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1 Answer

9 votes
9 votes

Answer:

y = 3x+4

Explanation:

slope formula is changes of y over the changes of x


\large \boxed{m = (y_2-y_1)/(x_2-x_1) }

m is slope in y = mx+b.

Substitute the coordinate points in.


\large{m = (7 + 2)/(1 + 2) } \\ \large{m = (9)/(3)} \\ \large{m = 3}

Since we know the slope, we rewrite by substituting m = 3 in the slope-intercept form.


\large{y = mx + b} \\ \large{y = 3x + b}

Then we either substitute one of given coordinate points to find the value of b. I will substitute (1,7) in the equation.


\large{7 = 3(1)+ b} \\ \large{7 = 3 + b} \\ \large{7 - 3 = b} \\ \large{4 = b}

Then rewrite the equation from y = 3x+b by substituting the value of b.


\large{y = 3x + b} \\ \large{y = 3x + 4}

User Mctylr
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3.3k points