Slope of parallel and perpendicular lines

What do the variables m and b represent in the formula y=mx+b?

• m= slope

  b= x intercept

• m= y intercept

  b= x intercept

• m= slope

  b= y intercept.

• m= x intercept

  b= slope.

Parallel lines have

• same slope

• different slope (reciprocate)

• y = 5x + 2

• y = -5x + 6
• y = -6x + 5

• y = 5x - 6

• y = -4x + 4
• y = 4x + 8

• y = -4x + 6
• y = 1/4x + 10

Perpendicular lines have

• same slope

• different slope (reciprocate)

• y = 5x + 2

• y = 5x - 6

What is the equation of the line that passes through the point (0,9) and is parallel to the line represented by y=5x+2?

• y = 9x + 5
• y = 5x + 2
• y = 5x + 9
• y = 2x + 5

What is the equation of the line that passes through the point (0,4) and is perpendicular to the line represented by y=6x+2?

• y = -1/6x + 4
• y = -6x + 4
• y = 6x + 4
• y = 1/6x + 4

What is the equation of the line that passes through the point (0,-7) and is parallel to the line represented by y=8x+1?

• y = 8x + 7
• y = -8x - 7
• y = 8x - 7
• y = -8x + 1