10M2 Substitution

10M2 Substitution

Multiple Choice

If a=7, what is the value of a+15?

• 22

• 35

• 2

On paper please complete the following questions. You will mark your answers on the next page.

Open Ended

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We take the 4 from both sides for the first one. Divide by 7 for the second. For the third we complete two steps in reverse order. Switch back to the google meet for the live explanation!

Multiple Choice

Red, Yellow or Green

• Red

• Yellow

• Green

Multiple Choice

Red, Yellow or Green

• Red

• Yellow

• Green

Multiple Choice

Red, Yellow or Green

• Red

• Yellow

• Green

Multiple Choice

Red, Yellow or Green

• Red

• Yellow

• Green

Multiple Choice

Red, Yellow or Green

• Red

• Yellow

• Green

Multiple Choice

Solve for t:
d = rt

• t = d - r
• t = r/d
• t = dr
• t = d/r

Multiple Choice

Solve for s:
a + b = s + r

• s = a/r + b
• s = (a + b)/r
• s = r(a + b)
• s = a + b - r

Multiple Choice

Solve for y:
3x + y = 12

• y = -3x +12
• x = y + 4
• x = y + 12
• y = 3x -12

Multiple Choice

Solve:
y = mx + b , for b

• y - mx = b
• y + mx = b
• ^y/_mx = b
• y + mx = -b

Multiple Choice

Make r the subject:
C = 2πr

• r = C/2π
• r = C - 2π
• r = 2πC
• r = Cπ/2

Multiple Choice

Make a the subject of
a + b = c

• a = c - b
• a = b - c
• a = b + c
• a = bc

Multiple Choice

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step
• They should add 19 instead of subtracting 19
• I can not find an error
• Instead of adding 3k they should subtract 3k

Multiple Choice

Solve for y:
3x + y = 12

• y = -3x +12
• x = y + 4
• x = y + 12
• y = 3x -12

Multiple Choice

Solve for x:

• x = yb - v
• x = by - v
• x = by + v

Multiple Choice

Solve:
y = mx + b , for b

• y - mx = b
• y + mx = b
• ^y/_mx = b
• y + mx = -b

Multiple Choice

ax + c = R
(solve for x) 

• ax = R + c
• ax = R - c
• x = a(R-c)
• x = ^(R-c)/_a