Answer:
8
Step-by-step explanation:
<h3>
Answer: y = 3x+4</h3>
Slope = 3
y intercept = 4
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Explanation:
Let's find the slope.
![m = \text{slope}\\\\m=\frac{\text{rise}}{\text{run}}\\\\m = \frac{\text{change in y}}{\text{change in x}}\\\\m = \frac{y_2-y_1}{x_2-x_1}\\\\m = \frac{7-4}{1-0}\\\\m = \frac{3}{1}\\\\m = 3](https://tex.z-dn.net/?f=m%20%3D%20%5Ctext%7Bslope%7D%5C%5C%5C%5Cm%3D%5Cfrac%7B%5Ctext%7Brise%7D%7D%7B%5Ctext%7Brun%7D%7D%5C%5C%5C%5Cm%20%3D%20%5Cfrac%7B%5Ctext%7Bchange%20in%20y%7D%7D%7B%5Ctext%7Bchange%20in%20x%7D%7D%5C%5C%5C%5Cm%20%3D%20%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%5C%5C%5C%5Cm%20%3D%20%5Cfrac%7B7-4%7D%7B1-0%7D%5C%5C%5C%5Cm%20%3D%20%5Cfrac%7B3%7D%7B1%7D%5C%5C%5C%5Cm%20%3D%203)
The slope is m = 3.
The y intercept is b = 4 due to the point (0,4). The y intercept <u>always</u> occurs when x = 0.
We'll then plug those m and b values into y = mx+b to get the answer y = 3x+4
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As a way to check the answer, plugging x = 0 should lead to y = 4
y = 3x+4
y = 3*0+4
y = 0+4
y = 4
So that works out. Let's try x = 1. It should produce y = 7
y = 3x+4
y = 3*1+4
y = 3+4
y = 7
That works out also. The answer is fully confirmed.
Answer:
Step 3
Step-by-step explanation:
The 28 just disappeared -->
Step 2
3 x + 28 = 15
Step 3
3 x = 15
Answer:
w = (p - 2l) / 2
Step-by-step explanation:
Step 1: Distribute
P = 2l + 2w
Step 2: Move 2l over
P - 2l = 2w
Step 3: Divide everything by 2
(p - 2l)/2 = w
And you have your perimeter equation in the term of <em>w.</em>