Point-Slope Form

Which of the following is point-slope form?

• y-y1=m(x-x1)
• y=mx+b
• y=b+mx
• ax+by=c

What two things do you NEED to write an equation in point-slope form?

• the slope and the y-intercept
• the slope and the x-intercept
• the slope and any point along the line
• two points on the line

A line has a slope of -2 and passes through point (2,10). Write the equation in point-slope form.

• y - 10 = - 2(x - 2)
• 2-y1= -2(10-x1)
• y - 2 = -2 (x - 10)
• y - 10 = - 2(x - 2)

A line passes through point (-3, 1) and has a slope of -1/3.  Write the equation of the line in point-slope form.

• -1/3
• y + 1 = 3 (x - 3)
• y - 1 = -1/3 (x + 3)
• y + 1 = -1/3 (x - 3)

What is the slope of the line y - 3 = 5 (x + 2)?

• -3
• 2
• 5
• -5

Identify the point from the equation of the line
y - 3 = 5 (x + 2).

• (-3, 2)
• (2, -3)
• (-2, 3)
• (3, 2)

Identify the slope and the point from the equation:
y - 10 = -5/2 (x + 5)

• m=5, pt: (-10, 5)
• m= -5/2 pt: (-5, 10)
• m= 2/5 (5, 10)
• m= -10, pt: 5

Write the equation of the line shown in point slope form.

• y - 7 = 3/5 (x - 0)
• y - 0 = -3/5 (x - 7)
• y + 4 = -3/5 (x + 4)
• y - 4 = -3/5 (x - 4)