# Grade 8 Practice Math Challenge Question and Answer Part II

Direction: Write equation of the line in ax+by+c=0 Time: 1 hour

- What is the set of values that will make the sentence like 2x+5>7 called?
- What is the range of y=2x
^{2}-1 on {1<x<4} - What is the range of y=2x
^{2}-1? - In which quadrant(s) is the graph of 2x-y=0
- Write in symbols: “the product of four and x divided by 3 is at most 10”.
- What is the zero of 3x-2y=12?
- What is the greatest integer function of f(3.6)?
- What is the slope of the line through (2,-3) and (1,-2)
- Find the equation of the line with an x-intercept of 2 and passing through (0,-1)
- If f(x) = x
^{2}+6x+9. What is f(3)? - What is the y-intercept of 3x-4y-12=0?
- Find the point of intersection of the lines 2x-y+1=0 and 3x-4y+6=0.
- For what value of k will 2x-y-4=0 and 10x-5y+k=0 be dependent?
- For what value of K will make 3x+4y+5=0 and 2x-ky-1=0 parallel?
- Solve for x and y: 1/x+1/y=1 and 1/x-1/y=3.
- Solve for x: 3x-4>17
- Write 364,000,000,000 in scientific notation.
- What value(s) of x is not permissible in ?
- Write in standard form: 0.12 x 10
^{5}. - Simplify:
- Solve for x:
- Factor completely: 3xy-6x+3y-6
- What is the domain of ?
- What is the range of equation in #23?
- 25. If a
_{n}=2^{2n-1 }– 1 , What is a_{4}?

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### Dan

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