basic algebra(SAT Math)

[sacred canyon]

Both lines need to be parallel to have no solution

Parallel lines have their coefficients × (some constant)

[raw star]

Parallel lines have the same slope (coefficient of the independent variable).

[sacred canyon]

We won't give you the solution.

We'll only guide you

Ex of parallel lines:-

X + Y = 2

2x + 2Y = 4

[raw star]

Right.

So notice how -a/2 is the slope of the second line

And notice how 3 is the slope of the first line

So since parallel lines have the same slope, you equate them

3 = -a/2

And solve for a from there

👍

yup

[sacred canyon]

Yes

[raw star]

because they never intersect

of course

.close

[sacred canyon]

.solved