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uysha [10]
3 years ago
13

HELP AHHHHHHHHHHHHHHHH

Mathematics
1 answer:
allochka39001 [22]3 years ago
8 0

Answer:

y = 3x+4

Step-by-step explanation:

slope formula is changes of y over the changes of x

\large \boxed{m =  \frac{y_2-y_1}{x_2-x_1} }

m is slope in y = mx+b.

Substitute the coordinate points in.

\large{m =  \frac{7 + 2}{1 + 2} } \\  \large{m =  \frac{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}

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