Question

Draw the graph of equation $3x-4y=12$. From the graph, find the value of $y$, when $x=0$ is?

• A. $y=3$
• B. $y=4$
• C. $y=-3$
• D. $y=-4$

Answer 1

The correct option is C $y=-3$

The given equation is $3x-4y=12⟹y=\frac{3}{4}x-3$

Assign values for x and find corresponding values of $y$

$x$ $4$ $8$ $-4$ $-8$

$y$ $0$ $3$ $-6$ $-9$

So, the ordered pair of values of $(x,y)$ are $(4,0),(8,3),(-4,-6),(-8,-9)$

Plotting these points on the graph we get above image

From the above graph, when $x=0$ then we get $y=-3$.

Hence, $y=-3$