Equation of Line/Curve of Best Fit

In the equation

y = x² +5x +7, match each coefficient with its correct letter

• a=0, b=5, c=7

• a=1, b=5, c=7

• a=7, b=5, c=1

Look at the data in this table.

Which equation most closely represents the line of best fit for this data?

• $y=1.77x+0.13$

• $y=0.56x-0.05$

• $y=0.5x$

• $y=2x$

Tags

CCSS.8.EE.B.5

Find the best fitting quadratic model for the data given.

• y = 1.2x² + 13x + 504.3

• y = 12x² + 13x + 504.3

• y = .12x² + 1.3x + 504.3

For which set of data would a linear model best fit?

• 
• 
• 
• 

Tags

CCSS.HSF-LE.A.1B

Based on this pattern, would a Linear or Quadratic model be most appropriate?

• Quadratic

• Linear

Which equation best represents this data set?
 $\left\{\left(-4,-4.8\right),\left(-3,-8.2\right),\ \left(-2,-9.1\right),\left(-1,-8.1\right),\ \left(0,\ -4.7\right),\ \left(1,\ 0.3\right)\right\}$  

•  $y=1.1x^2+4.2x+4.9$  

•  $y=1.1x^2+4.2x-4.9$  

•  $y=1.1x-4.2$  

•  $y=1.1x+4.2$  

find line of best fit using calculator through these points (0,0)(1,2) (3,5) (6,7)

• y=65x+7

• y=1.14x+.64

• y=1.5x+64

Tags

CCSS.8.EE.B.5

The table shown is comparing a person's foot length to their height in cm. Calculate a line of best fit.

• f(x) = 25.05x + 5.57
• f(x) = 5.57x + 25.05
• f(x) = -5.57x + 25.05
• f(x) = 5.57x - 25.05

find line of best fit using calculator through these points (0,0)(1,2) (3,5) (6,7)

• y=65x+7

• y=1.14x+.64

• y=1.5x+64

Tags

CCSS.8.EE.B.5

find line of best fit through these points

(1,3) (2,4) (5,8)

• y=1.27x+1.615

• y=2x+7

• y=1.7x+8

Tags

CCSS.8.EE.B.5