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3 years ago

Given f(x)=22x+12, find f(7)

Mathematics

2 answers:

krek1111 [17]3 years ago

8 0

166

Plug in 7 for x

I need more letters

Zarrin [17]3 years ago

4 0

Substitute x for 7.

f(x)=22x+12

f(7)=22(7)+12

Multiply first, then complete addition.

f(7)=154+12

f(7)=166

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DochEvi [55]

Answer:

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Step-by-step explanation:

Hi there!

Slope-intercept form: $y=mx+b$ where m is the slope and b is the y-intercept (the value of y when x=0)

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$m=\displaystyle\frac{y_2-y_1}{x_2-x_1}$ where two points that fall on the line are $(x_1,y_1)$ and $(x_2,y_2)$

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Therefore, the slope of the line is 3. Plug this into $y=mx+b$ :

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Recall that the y-intercept occurs when x=0. Given the point (0,-4), the y-intercept is therefore -4. Plug this into $y=3x+b$ :

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I hope this helps!

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Step-by-step explanation:

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