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11 votes
11 votes
Graph y=2x + 5 I need help graphing this problem

User TiagoM
by
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1 Answer

21 votes
21 votes

Given the equation:


y=2x+5

Let's graph the equation.

To graph the equation, let's use three random points.

Find values of y using random values of x.

We have the following:

• When x = -1:

Substitute -1 for x and solve for y


\begin{gathered} y=2(-1)+5 \\ y=-2+5 \\ y=3 \\ \\ When\text{ x=-1, y=3} \end{gathered}

• When x = 0:


\begin{gathered} y=2(0)+5 \\ y=0+5 \\ y=5 \\ \\ \text{ When x=0, y = 5} \end{gathered}

• When x = 1:


\begin{gathered} y=2(1)+5 \\ y=2+5 \\ y=7 \\ \\ \text{ When x=1, y = 7} \end{gathered}

Therefore, we have the points:

(x, y) ==> (-1, 3), (0, 5), (1, 7)

To graph the equation, plot the points on a graph and connect the points using a straight line.

We have the graph below:

Graph y=2x + 5 I need help graphing this problem-example-1
User Mohit Uprim
by
3.1k points