Question

For y = 4x - 7, fill in the y-values for the following coordinate pairs: (0,_), (1,(2,_)

Answer 1

The Solution.

Step 1:

We write out the equation.

$y=4x-7$

Step 2:

We shall substitute the given values of x into the equation to obtain their corresponding values of y.

$\begin{gathered} \text{For x=0, we get} \\ y=4(0)-7=-7 \\ \Rightarrow the\text{ first coordinate is (0,-7)} \end{gathered}$$\begin{gathered} \text{For x=1},\text{ we get} \\ y=4(1)-7 \\ y=4-7=-3 \\ \Rightarrow the\text{ second coordinate is (1,-3)} \end{gathered}$$\begin{gathered} \text{For x=2, we get} \\ y=4(2)-7 \\ y=8-7=1 \\ \Rightarrow the\text{ third coordinate is (2,1)} \end{gathered}$

Step 3:

Presentation of the Answer.

The correct answers are (0,-7) , (1,-3) and (2,1)