Question

solve graphically 3x+4y+3=0 and 3x+4y-21=0. find the coordinates of the vertex of the triangle​

Answer 1

Step-by-step explanation:

Let's solve for x.

3x+4y+3=0

Step 1: Add -4y to both sides.

3x+4y+3+−4y=0+−4y

3x+3=−4y

Step 2: Add -3 to both sides.

3x+3+−3=−4y+−3

3x=−4y−3

Step 3: Divide both sides by 3.

3x/3=−4y−3/3

x=−4/3y−1

Answer:

x=−4/3y−1

Let's solve for x.

3x+4y−21=0

Step 1: Add -4y to both sides.

3x+4y−21+−4y=0+−4y

3x−21=−4y

Step 2: Add 21 to both sides.

3x−21+21=−4y+21

3x=−4y+21

Step 3: Divide both sides by 3.

3x/3=−4y+21/3

x=−4/3y+7

Answer:

x=−4/3y+7