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pochemuha
3 years ago
7

Write an equation that represents the line. (Use exact numbers)

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
8 0
Y=3\4+2

Slope=rise/run. 3\4
Y-intercept = 2
Alecsey [184]3 years ago
6 0

Answer <u>(assuming it can be in slope-intercept form)</u>:

y = \frac{3}{4} x+2

Step-by-step explanation:

When knowing the y-intercept and a slope of a line, you can write its equation in slope-intercept form, or y = mx + b format.  

1) First, find the slope. Use two points from the graph. We can see that the points (0,2) and (4,5) are on the line, therefore substitute their x and y values into the slope formula m = \frac{y_2-y_1}{x_2-x_1} and solve:

m = \frac{(5)-(2)}{(4)-(0)} \\m = \frac{5-2}{4-0} \\m = \frac{3}{4}

Thus, the slope is \frac{3}{4}.

2) Next, find the y-intercept of the line by looking at the graph. The y-intercept is the point at which the line intersects the y-axis. By reading the graph, we can see that that point is (0,2), thus 2 is the y-intercept.

3) Now, using the slope-intercept formula y = mx + b, substitute the found values for the m  and the b to write the equation of the line.

Since m represents the slope, substitute \frac{3}{4} in its place. Since b represents the y-intercept, substitute 2 in its place. This gives the following answer and equation:

y = \frac{3}{4} x+2

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