Jika garis 4x+ay = 8 dan ay=9x + 5 saling tegak lurus, maka nilai a

We are given equations as

Firstly, we will write in slope intercept form of line

y=mx+b

Subtract both sides by 4x

now, we can divide both sides by a

we can find slope

so, we get

we are given second equation as

Firstly, we will write in slope intercept form of line

y=mx+b

divide both sides by a

we can find slope

we are given both lines are perpendicular

so, the multiplication of their slopes must  be -1

we can plug values

now, we can solve for a

Multiply both sides by a

now, we can solve for a

we get

...............Answer

900 degrees

step-by-step explanation: