What is the equation for point slope?
y - y1 = m(x - x1 )
Which Graph show a No Correlation
Graph A.
A study finds that students who eat breakfast perform better on tests. What type of relationship is this?
Correlation
What are step for find Inverse of equation?
Switch x and y, Solve for y and replace y with
f^-1(x)
Multiply this number with any other number and you will always get the same answer. What’s the number?
Zero
Write the slope-intercept form of the equation with slope m = 4 and passing through the point (-1, -3).
y = 4x + 1?
Which Graphs show a Negative Correlation
B and D.
As ice cream sales go up, the number of people at the pool also goes up.
Is this correlation, causation, or neither?
Correlation
Find the inverse of f(x)=4x−7.
f^-1(x) = x/4 + 4/7
What are three rule stander form have to follow?
x and y on same side, x cannot be negitive and not fractions.
Write the standard form of the equation with slope m = 1/2 and passing through the point (4, -1).
x - 2y = 6
What Kind of Correlation does graph show?
Negative Correlation
People who wear bigger shoes are better at reading.
Is this correlation, causation, or neither?
Neither
Find the inverse of
f(x) = x/5 - 3
f^-1 (x) = 5x +15?
A triangle with two equal sides is called?
An Isosceles triangle?
What is the slope-intercept form of the equation of a line that passes through the points (2, 3) and (4, 7)?
y = 2x - 1
Which Line best fit for data.
blue line
After a big rainstorm, the amount of water in the river increases.
Is this correlation, causation, or neither?
Causation
Find the inverse of f(x)=(x+2)2
f^-1(x) = sqrt (x)- 2
Why is the math book so sad?
Because it has so many problems!
A hiking trail rises 250 feet for every 0.5 miles you walk uphill. At the start of the trail (0 miles), the elevation is 1,200 feet.
Write the slope-intercept form of the elevation equation.
y = 500x + 1200
What is the difference between extrapolate and interpolate?
extrapolate- making a prediction beyond the range of the data interpolate-making a prediction within the range of the data.
Or Extrapolate is outside the data and Interpolate inside the data.
A school installs new air filters, and allergies in the building drop. Is this correlation, causation, or neither?
Causation
Find the inverse of
f(x) = (3x+4)/2
f^-1(x) = (2x - 4)/3
Which number becomes even when you take away one letter from it?
Seven?