Alg 1 Graphs

Write the equation of the line.

• y = -2/3x + 4

• y = 2/3x + 4

• y = 3/2x + 4

• y = -3/2x + 4

What is the slope in the picture?

• Positive

• Negative

• Zero

• Undefined

What is the Domain and Range of this graph?

• D:(-∞,∞)
  R:[-3,∞)

• D:[-3,∞)
  R:(-∞,∞)

• D:(-∞,∞)
  R:[3,∞)

• D:(-∞,∞)
  R:(-3,∞)

If you are given the equation f(x)=-(x-3)²+1,
What is the vertex?

• V(3,1)

• V(1,3)

• V(-3,1)

• V(-3,-1)

Given the vertex, V(-4,-2), of a quadratic equation, find the equation if the graph passes through the point (-2,-6).

• ƒ(x) = -(x+4)²-2

• ƒ(x) = (x+4)²-2

• ƒ(x) = -(x-4)²-2

• ƒ(x) = (x-4)²+2

Which of the following is NOT true of graphs of quadratic equations?

• If a<0, the parabola opens down

• If V(h,k) is the vertex of a graph, then x=k is the axis of symmetry.

• If b²-4ac < 0, then there are no real roots

• If |a|>1, then the parabola narrower than if a=1

What is the range of the ordered pairs graphed above?

• {1, 2, 3 ,4 ,5 ,6}

• {0, 1, 2, 3, 4, 5, 6}

• {2, 4, 8}

• {-1, 0, 1, 2, 3, 6}

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Which graph is a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Mrs. Jay teaches Jack and Olivia and is trying to compare their how productive they are in class. the graph shows the number of assignments that they completed over a few months. What conclusion could Mrs. Jay make about her their productivity?

• Olivia increased her productivity the most over time

• Jack increased his productivity the most over time

• In March, Olivia was most productive when Jack was least productive

• In February, Jack was most productive when Olivia was least productive